Black Friday: lifetime access is on a special offer in the app, until November 30. Black Friday: special offer on lifetime access, until November 30. Download
사회측정은 개인 간의 관계를 분석하는 데 사용됩니다.sahoecheugjeongeun gaein ganui gwangyereul bunseoghaneun de sayongdoemnida.Sociometry is used to analyze relationships between individuals.